When we say that someone or something is in danger imminent, it means that they are at great risk of harm or damage and that the threat is likely to occur very soon. There are several synonyms that can be used to convey the same sense of urgency and immediacy. These include phrases like "at risk," "in peril," "in jeopardy," "in harm's way," and "under threat." Other options might include "endangered," "vulnerable," "exposed," "unsafe," and "unprotected." Each of these terms conveys a slightly different nuance, but all highlight the urgency and severity of the situation.